Water Challenges for the Future


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PRAGWATER now providing daily reference evapotranspiration for Cuba


Daily reference evapotranspiration (ETo) is now available for Cuba at the following link: Northern Caribbean ETo.  The link also includes ETo data for Puerto Rico, the US Virgin Islands, Hispaniola and Jamaica.

Yesterday’s Reference Evapotranspiration

CUBA

Click for archived maps of reference evapotranspiration and  other climate variables.

 

The following links will provide guidance on scheduling irrigation using the ETo map data.

Harmsen E.W., 2012.  TECHNICAL NOTE: A Simple Web-Based Method for Scheduling Irrigation in Puerto Rico.  J. Agric. Univ. P.R. 96 (3-4) 2012.

A simple irrigation scheduling tool for using ETo maps

Cool Google Map Area Calculator App


Online area calculator tool for Google maps.  In the example below, the area of Puerto Rico is calculated to be 8,939 km^2.  The official area is closer to 9,100 km^2.  I created the map below quickly (in about 1-minute), but I could probably obtain a more accurate estimate of area if I took a bit more time.  This tool could be valuable for estimating the area of farm fields, catchment areas for estimating surface runoff, etc.

googlemapareacalculator

http://www.mapdevelopers.com/area_finder.php

 

PRAGWATER now providing daily reference evapotranspiration for St. Thomas, USVI


Daily reference evapotranspiration (ETo) is now available for St. Thomas (USVI) at the following link: Northern Caribbean ETo.  The link also includes ETo data for Puerto Rico, St. Croix (USVI), Hispaniola and Jamaica.

Yesterday’s Reference Evapotranspiration

St. Thomas, USVI

The following links will provide guidance on scheduling irrigation using the ETo map data.

Harmsen E.W., 2012.  TECHNICAL NOTE: A Simple Web-Based Method for Scheduling Irrigation in Puerto Rico.  J. Agric. Univ. P.R. 96 (3-4) 2012.

A simple irrigation scheduling tool for using ETo maps

New Micro Irrigation Book


Sustainable Micro Irrigation Design Systems for Field Crops: Practices and Theory

Megh R. Goyal, Mohammad N. Elnesr, Editors

http://www.crcpress.com/product/isbn/9781771880992

9781771880992

I congratulate the editors on the publication of this book on micro irrigation design. Water for food production is clearly one of the grand challenges of the twenty-first century, and it is hoped that this book will help irrigators and famers around the world to increase the adoption of water savings technology such as micro irrigation.”

—Vincent F. Bralts, PhD, PE, Professor and Former Associate Dean, Agricultural and Biological Engineering Department, Purdue University, West Lafayette, Indiana

 

FINCA ALZAMORA WEATHER DATA AVAILABLE ONLINE


Today a new weather station was installed in the Finca Alzamora, UPRM campus, Mayaguez Puerto Rico.  Data from the weather station are available from two websites:  WeatherLink  or WeatherUnderground.  The WeatherUnderground site allows you to download archived data in a coma delimited text format that can be imported into Excel.  Data being collected include:  air temperature, dew point temperature, RH, wind speed and direction, solar radiation, UV index, soil moisture tension and soil temperature.  A value of the reference evapotranspiration is available on the WeatherLink page.  We are still working out a few kinks, but should have it running smoothly within a few days.

IMG_5616

 

The weather station was purchased with funds from the UPRM NOAA CREST Project.

New Book Series on Micro Irrigation just Published


Research Advances in Sustainable Micro Irrigation

Click to download pdf flyers

Vol. 1. Sustainable Micro Irrigation Principles and Practices

Vol. 2.  Sustainable Practices in Surface and Subsurface Micro Irrigation

Vol. 3. Sustainable Micro Irrigation Management for Trees and Vines

Vol. 4. Management, Performance, and Applications of Micro Irrigation

Vol. 5. Applications of Furrow and Micro Irrigation in Arid and Semi Arid Regions

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